DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B" [04/2013 - 10/2016]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [04/2013 - 09/2020]

   Body Electrical > Blind Spot Monitor Master > Clear DTCs 

   Body Electrical > Blind Spot Monitor Slave > Clear DTCs 

2. Recheck for DTCs and check if the same DTC is output again.

   Body Electrical > Blind Spot Monitor Master > Trouble Codes 

   Body Electrical > Blind Spot Monitor Slave > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are output	A
   No DTCs are output	B

   HINT: 

   • If CAN communication system DTCs are stored, they may also be stored for other systems.
   • If the CAN communication system has been inspected and repaired, the DTCs will not be output when rechecking for DTCs.
   • If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.

     Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - 06/2014] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2014 - 08/2015] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 10/2016]

Result: 

A 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - 10/2016] 

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - 06/2014]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2014 - 08/2015]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 10/2016]